Once magnolia trees grow much, and gradually become trees, then various problems will follow, the disease is mainly the following two kinds:
Just as the name implies, it is rotten root. Generally, when a thick and simple tree is still a young seedling, if it is accidentally infected by a fungus, it will gradually rotten root. At last, black stripes will grow on the stem, and then a future big tree will burp. Generally, drainage work should be done well in advance, and then the soil should be disinfected. Basically, there is nothing to do. Observation at any time, found that the seedlings with rotten root disease were directly pulled out and burned, and then sprinkled with special drugs in the soil, can prevent the infection of the disease, can use a certain concentration of lime water to irrigate the seedlings.
This is the most destructive problem in the current thicket forest. Of course, it is also related to the current environment. If there is haze on that day, and within a certain temperature, it will basically get sick. There are smoke like things on the bark of the sick thicket leaves, and then it starts to develop slowly and weaken. In the face of this situation, there is no good way to solve, only when planting trees to control the density, to ensure ventilation in the forest.
Leaf blight, like rotten roots, is also caused by a fungus, which causes the leaves to wilt and then fall off. The solution is to cut down all the dead leaves and branches and spray them regularly.
There are a lot of insects that can damage the trees, such as termites, longicorn, moths, etc.
Termites can bore all the roots of the magnolia trees. Solution: find the old nest of termites, smoke to smother them, in addition, you can also dig the old nest of termites, mainly don't dig the root of the tree.
Will break the roots of the Magnolia. Solution: spray medicine, catch insects, scrape eggs
